mt7921.conf

[daniewicz]

Where can I find a list of module parameters for mt7921u?

[morrownr]

Hi @daniewicz

There are multiple parts of in-kernel drivers:

$ modinfo | grep mt79

You can see below that the mt7921u module does not have any parameters:

$ modinfo mt7921u
filename: /lib/modules/6.18.1-v8+/kernel/drivers/net/wireless/mediatek/mt76/mt7921/mt7921u.ko.xz
license: Dual BSD/GPL
author: Lorenzo Bianconi lorenzo@kernel.org
description: MediaTek MT7921U (USB) wireless driver
firmware: mediatek/WIFI_MT7961_patch_mcu_1_2_hdr.bin
firmware: mediatek/WIFI_RAM_CODE_MT7961_1.bin
srcversion: 545B9A3EB8D1F80C785CA22
alias: usb:v35BCp0107ddcdscdpicFFiscFFipFFin*
alias: usb:v0846p9065ddcdscdpicFFiscFFipFFin*
alias: usb:v0846p9060ddcdscdpicFFiscFFipFFin*
alias: usb:v3574p6211ddcdscdpicFFiscFFipFFin*
alias: usb:v0E8Dp7961ddcdscdpicFFiscFFipFFin*
depends: mt76-usb,mt792x-usb,mt7921-common,mt76,mt76-connac-lib,mt792x-lib
intree: Y
name: mt7921u
vermagic: 6.18.1-v8+ SMP preempt mod_unload modversions aarch64

On the other hand, you can see below that mt7921_common does have one paramter:

$ modinfo mt7921_common
filename: /lib/modules/6.18.1-v8+/kernel/drivers/net/wireless/mediatek/mt76/mt7921/mt7921-common.ko.xz
author: Sean Wang sean.wang@mediatek.com
license: Dual BSD/GPL
description: MediaTek MT7921 core driver
srcversion: 291CAB6BA8D555E35E7C3E2
depends: mt76-connac-lib,mt76,mac80211,mt792x-lib,cfg80211
intree: Y
name: mt7921_common
vermagic: 6.18.1-v8+ SMP preempt mod_unload modversions aarch64
parm: disable_clc:disable CLC support (bool)

Here is another example:

$ modinfo mt76_usb
filename: /lib/modules/6.18.1-v8+/kernel/drivers/net/wireless/mediatek/mt76/mt76-usb.ko.xz
license: Dual BSD/GPL
description: MediaTek MT76x USB helpers
author: Lorenzo Bianconi lorenzo.bianconi83@gmail.com
srcversion: 4942347DB4F991ACE51114D
depends: mt76
intree: Y
name: mt76_usb
vermagic: 6.18.1-v8+ SMP preempt mod_unload modversions aarch64
parm: disable_usb_sg:Disable usb scatter-gather support (bool)

In this case, the parameter is used to turn off scatter-gather support.

One of the major differences between old Realtek out-of-kernel drivers and the modern mac80211 drivers is that the modern drivers have very few parameters. That is intentional. Even the modern Realtek rtw88 and rtw89 in-kernel drivers are the same. Example:

The old Realtek out-of-kernel USB WiFi drivers had dozens of parameters and these drivers defaulted to using USB2, even if the adapter was capable of using USB3. You have to use a parameter to turn on USB3. With the modern drivers, USB2/USB3 is automatically detected and the appropriate code is used to set the appropriate mode. It works amazingly well. If you are like me and do a lot of driver testing, you may need to use a USB2 cable to force USB2 mode but I do things that normal users do not care about.

I hope this helps. If there is a specific issue, let me know.

@morrownr

[daniewicz]

Thanks for the fast reply!

Just bought a NETGEAR A8000 AXE3000 USB Wireless card and I am tinkering. I stumbled upon your website and it is impressive.

[morrownr]

I have a Netgear A9000. The A8000 has given me the impression that it is a good adapter as I have had some positive reports and no negative reports. It is a big seller.

Current status on the mt7921u driver: Right now, managed mode, AP mode and the P2P modes are all working fine. Monitor mode is currently broken but we are trying to help find the problem.

If you have any problems, let me know.